Distribution and source identification of dissolved sulfate by dual isotopes in waters of the Babu subterranean river basin, SW China
نویسندگان
چکیده
Sulfur and oxygen isotopes were employed to identify SO42- sources in surface water and groundwater in the Babu subterranean river basin (BSRB). Our study revealed SO42- enrichment in the BSRB waters compared with adjacent areas. The SO42- in some samples originated mainly from precipitation; in others, it was derived mainly from sulfide dissolution in coal seams or from gypsum dissolution. In the water at the subterranean river exit, 13% of SO42- originated from precipitation, 40% from sulfide oxidation in coal seams, and 47% from gypsum dissolution.
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